She is so ______ to her children that she has decided to quit her job to stay at home and look after them.
Giải thích
Chọn D
persistent (a): kiên trì, bền bỉ
responsible (a): chịu trách nhiệm
kind (a): tốt bụng
devoted (a): hết lòng, tận tâm, tận tụy